Ionia Weather Forecast
- 37
- 53
Decreasing Clouds
- 41
- 56
Chance Rain Showers
- 46
- 63
Chance Rain Showers
- 39
- 58
Rain Showers Likely
- 37
- 55
Slight Chance Rain Showers
- 40
- 55
Chance Rain Showers
Today 7 May Ontario
Partly sunny through early Afternoon, then mostly cloudy with a chance of Showers late. Cool with Highs Ranging from the upper 40s on the Hilltops to the mid 50s across the lower Elevations. Light Winds, becoming northwest around 10 Mph. Chance of rain 30 percent.
Tonight 7 May Ontario
Mostly cloudy with a 50 percent chance of rain Showers. Patchy frost developing overnight. Lows in the upper 30s. Light west Winds.
Ionia Temperature Statistics
May Temperature
Rochester, Greater Rochester International Airport (15.5 miles)
Lowest 3 May, 2026
34.6 °FAverage May
50.5 °FHighest 4 May, 2026
74.6 °F
Climate (2021–Present)
Rochester, Greater Rochester International Airport (15.5 miles)
Average Low 2021–2026
42.3 °FAverage 2021–2026
50.8 °FAverage High 2021–2026
59.5 °F